aluminum 470 block and head, unltimate motor?

[sikpupy]

I have heard they have has sealing problems, but, this due to overheating and, or, metal differances. If I go all aluminum, would this be a great engine setup? I love the idea of light weight and lots of power, but, still wonder how reliable (the engine itself) would be.

 

[Don S]

Re: aluminum 470 block and head, unltimate motor?

Uhhhh, where ya gonna find an aluminum head for a 470?

 

[bomar76]

Re: aluminum 470 block and head, unltimate motor?

....another "power to weight ratio" brainstorm

 

[rodbolt]

Re: aluminum 470 block and head, unltimate motor?

an aluminium head on an open deck engine? this I gotta watch

 

[Bondo]

Re: aluminum 470 block and head, unltimate motor?

Originally posted by bomar76:<br /> ....another "power to weight ratio" brainstorm

Ayuh,...........<br />I posted on Boatman's Other Identical thread with the Different Title............ <br />

Originally posted by Bondo:<br />

thinking about getting a 3.7 470 block and throwing an aluminum head on there.

For Some Reason,................ The Vision I see is,.............

<br /><br /><br />Betting on the Camel to Win at a NASCAR Race.......................

 

[WillyBWright]

Re: aluminum 470 block and head, unltimate motor?

If you could get an aluminum manifold as well, then there'd be a significant weight improvement. But just a head isn't going to make any noticable difference and you won't keep a head gasket in it unless you retard 4 degrees and even that's no guarantee. You lose the speed you'd gain and then some.

 

[lilmandavis]

Re: aluminum 470 block and head, unltimate motor?

maybe make a new hull out of carbon fiber while your at it?

 

[sikpupy]

Re: aluminum 470 block and head, unltimate motor?

GD, WTF??? I was just asking.......

 

[sikpupy]

Re: aluminum 470 block and head, unltimate motor?

Oh, and..<br /><br />Don S – I have not looked into a whole lot as this is my first post/question on this particular “idea”, but, I saw a edelbrock aluminum head. As much as everyone *****es about this engine as opposed to trying to make it better (the American way, ehy? No wonders all the other countries hate us, go figure), I wanted to look into it. Sure, it may not be a simple plug and play (lazy f**n Americans – FYI I am an American but not so lazy) but if it takes a little work, why not?<br /><br />Bomar76 – If that’s your picture, do yourself, especially us, a favor and chop your head off, please!!<br /><br />Rodbolt – instead of being an arrogant pr** , why don’t you just explain why it wont work? I am not a machinist so I don’t know ALL the intricacies of an open deck. Are you so for sure the negatives cant be overcome without tedious effort or are you following all the other sheep from what you have just overheard through conversations? Please do share your wisdom oh great god of open deck designs so we will all know.<br /><br />Bondo – well, if it wasn’t for your vision making me laugh, I would chew you out too, but, that’s not very nice either. I can’t believe my envisioned boat engine will lose to a camel, I had such high hopes! Sad, so sad, lol.<br /><br />WillyBWright – I thought of that, due to detonation, but, are you sure? Aluminum head = better cooling through heat transfer, right? Also, I read that using the 7? Head and not the 9?, controls the pre ignition factor better. Sure, that would raise compression, but, I was going to look into dished pistons to reduce the compression ratio.<br /><br />Lilmandavis – don’t be starting that with me, you don’t know who your taking to as I have enough ideas for now, but, since you bring it up, besides the cost factor, what WOULD I benefit from a comparably sized 19ft open bow in carbon fiber?<br /><br />Anyone else – anyone else that I haven’t covered have something actually constructive to say? I do not understand, yet, why this would be such a big deal. If it is, I will learn it in time but I do like to know the reasoning of things. I just do not accept it cant be done just because someone says, since they heard it from someone else…and so on…and so on…and so on……….

 

[tommays]

Re: aluminum 470 block and head, unltimate motor?

I would try the RED search above and put in "470" and then spend a few days reading all the problems this experment on the boating public had<br /><br />There is a reason merc gave up on trying to build there own motor <br /><br /><br />tommays

 

[Purduebarry]

Re: aluminum 470 block and head, unltimate motor?

What is your goal? Besides dropping f-bombs to an already beleagured group of dedicated boaters, just getting over the Spring rookies.<br /><br />A drag boat? A ski boat that will rip the arms out of their sockets? Another speed freak running WOT at 80 MPH on a crowded lake over the weekend? Or just a rediculiously expensive bowrider?<br /><br />I'd say almost every performance boat company in existance has already executed the outragous but they have an obligation to provide reliability too. There is a fine line to everything, yes you can find it and even cross it! The fact that you have this freedom and want to dream about it is okay but just becuase we don't agree doesn't give you the right to tell us to pound sand! Execute then point out the naysayers, but if you might not like the answer, then don't ask the question. Most of us here are trying to deal with the aformentioned reliability!<br /><br />Moderators, open up a HIGH PERFORMANCE BOATING ONLY Forum for our friend here, the Boatman has a dream! Huummm...now that makes sense?

 

[Don S]

Re: aluminum 470 block and head, unltimate motor?

Purduebarry, they already have a forum for all aluminum, high performance, 7000 rpm 470's<br /><br /> Click Here

 

[Shawdaddy]

Re: aluminum 470 block and head, unltimate motor?

Boatman123....<br /><br />You say lazy f***in Americans? I thought you did. Let me shed some light, I am a 13 year active duty member of the U.S. military and have served my country and loved every minute of it. Have you served your country? Didn't think so...You served in the Middle East? You ever had to comfort your friend knowing that he was goona die.....You ever seen you best friend shot and bleed to death???? Didn't think so. I think you need to say.. Boatman 123 is a lazy American..I volunteer to fight what people like you are scared of. So how dare you come on here and belittle these guys. So go get in your 100mph boat and show everybody how cool you and your boat are. Me and the other guys will be there to pluck you outta the water when you crash it.

 

[Purduebarry]

Re: aluminum 470 block and head, unltimate motor?

Don S, LOL...couldn't help myself. Don't wave the flag in my face two weeks before the 4th of July and bust on Americans !<br /><br />Hey kids, look what Daddy built...HANG ON !!!

 

[sikpupy]

Re: aluminum 470 block and head, unltimate motor?

tommays – yea, I have been trying that but I have not found any definitive answer as to weather it is possible, or not, but I am going to keep looking.<br /><br />Purduebarry – interesting how “I” am dropping the f-bombs on people who attacked me first from a simple question, does this make sense? Not! Look at my post again, does it sound like I KNOW what I am doing or not sure, confused and asking for help? Does my post really reflect that I just want to go fast and could care less about anything else? Trust me, I have nothing against anyone who says different. This is my whole point, wouldn’t a “it’s not going to work” be better than saying I am going to lose to a camel race (that WAS funny), but, the above posts are not. Damn, give me some reasoning so I understand, not a good bashing. No, no speed demon here, no fruit cake either. I just thought it would be nice to fix a common issue with a boat motor and add some performance to it and make it as dependable as the ol 130/140 mercs. Maybe merc just did not want to waste time with the motor and dropped it, does not mean specifically the problems can’t be corrected……………….. and I am ALL about 100% reliability. What do I also want? I want a boat that will do 50mph top (not always going to do it), can troll through the strongest currents with ease all on an economical scale. Yes, I know, sacrifices will need to be made, power for fuel, but, this is a long term project/idea for next summer fun.<br /><br />Shawdaddy – First off, you should be the last to comment, *you* are NOT lazy!! I am not bashing all “Americans” but the **lazy** f**n Americans that make America the crap that it is. The only reason we are such a good country is for the ones, like me believe it or not, that wave to people in traffic, stop to help others, care about small things that are a big deal to others. No, I have not been to Iraq to serve my country because I believe we should have been in and outta there a long time ago, if ever we went in in the first place, which we did. Bush shoulda had a in AND out plan (even though its not black and white situation) before starting this. We are not fighting for America or to prove we are good Americans, we are fighting for someone else and someone else’s rights, throwing our values (for good or bad) in someone else’s culture purely from the orders of our government (which I have mixed feelings about). I have mixed feelings on Iraq, and that’s a different post altogether, but, be assured that the “cause” you are fighting for makes me honored and bow to the guys over there putting so much effort into it. Trust me when I say I have seen death at ALL angles (way too many for my needs) and I can easily imagine Iraq. Personally, I just want all the guys, and girls, to come back and enjoy their families ASAP.

 

[rodbolt]

Re: aluminum 470 block and head, unltimate motor?

boatman123 by open deck it means the tops of the cylinders have no support, similar to most outboard blocks. reliability and high performance is not a trade mark of open deck,closed cooling and AL heads.<br /><br /> we had enough head gasket problems on those junkers back when they were in production.<br /> best thing is to maintain what ya have.<br /> or remove it and add a V8.<br /> I thought ,as your into modifying, you understood what the difference between open and closed deck or even siamesed cylinders ment.<br /> sorry my bad I guess I am ignorant.

 

[FreeBeeTony]

Re: aluminum 470 block and head, unltimate motor?

all I can say is WOW.............

 

[Purduebarry]

Re: aluminum 470 block and head, unltimate motor?

Dude, go to some boat races and get in the pits. You're wound up like a three dollar watch. Lots of boats are capable of doing 50 with ease, is all it takes is money. As for what you are suggesting, it ain't gona happen. For the money to do so you could buy a boat that will do 50+ with no mods. On the other hand Scuffy the Steamboat did it, I think I can...I think I can...maybe you can too!

 

[sikpupy]

Re: aluminum 470 block and head, unltimate motor?

Okay, since this is such a big request on my end, let me explain a few more things so you will know where Iam coming from, if you all even really care at this point.<br /><br />I have a 19-ish foot 84 scorpian 189? chris craft. I got it and the trailer for $300 and NO MOTOR. I wanted a boat no bigger than 19ft with the highest sides possible to go deep, or, deep as one can with a 19ft'er. I want a light weight engine to keep the back end out of the water as much as possible, hence the all aluminum block, head, manifold......etc.. The 470 seemed like the perfect canidate IF all the problems inherited to it could be overcome. To save an extra 40? punds in the back with an aluminum head on a little 4cyl engine would be nice. With the "just like a desil" (yea, my spelling sucks!!) power why wouldnt someone want to search into a power plant like that? Best of all worlds.<br /><br />Okay, so, I can actually take a hint. I am still going to look into the engine on the side just to see what its all about (on a microscopic level), but, what do YOU suggest, that would yield the same results? Whats my other out, a big ol V-6 weighing the azz end down or just the good ol 140 merc is best I can do? I DO have a 140 on the way for the first motor to put in her to get her running around as of now, so, its not like I am totally blind to the idea of another engine.<br /><br />Oh, and rodbolt, I do know what they mean, but, I just do not know what there strong points, weak point and limitations are, indevidually, again, something I need to reasearch a little more on I will quickley admit. Some of these engines do stay alive for a long time, is it by sheer luck? Is it something in the assembly? all the above? Who knows.......

 

[tommays]

Re: aluminum 470 block and head, unltimate motor?

I have had a 1995 3.0 lx on a 19 cuddy cabin boat for 11 years its no rocket but will do 41 mph and still do 39 with 6 people on the boat<br /><br />It is a stone dead reliable motor with basic care and thousands of them used here and there with easy to find parts <br /><br />The jump to any V motor while giveing a lot more power is also a huge jump in price and stuff needed <br /><br /><br />tommays